Re: 1997 SAAB 900s speedometer and tachometer not working
Remove the instrument panel form the dash. Pull the back off and resolder resistor R13 on the back circuit board. This is a fairly delicate job and requires a fine pointed soldering iron. This fixed the Tach, Odometer readout, and fuel guage but not the speedometer in my 85 900 s.
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check for a blown fuse in the fuse panel and if its not that pull the gauge cluster out of the dash and check the power and ground going to it cause most of the time its a bad ground wire or power wire cause people tend to kick wires under the dash on accident or they get worn or come apart
Try to tightin up the light bulb. be aware the only way to do this is to remove the hole dash. if you do not know how to do this i would recamend you take it to a shop are ask me to go through step by step directions.
If all the guages quit working at the same time, then it is probably a blown fuse. Check your fuse panels in the dash or under the hood. Look for a fuse that is labeled instrument panel or guages, it is probably blown.
Have you check the fuse to see if the fuse for the gauges are bad, also there is a fuse box under the hood that may contain additional fuses if one is not located in the fuse compartment under the dash.
I'm not sure this will fix it, but it's the "obvious" solution if it's real simple. Is there a button above the radio that says "black panel" ? If so press it and the lights would come back on. If that's not it, then it's probably a blown fuse. Open the fuse box (see owner's manual for location on your model and year) and look at the fuses to see if any are discolored or broken.